Picker-check for looms



(Nd Model.)

W. KERSHAW. PIOKER' CHECK FOR LOOMS.

Patented May 30, 1893.

. UNITED STATES PATENT OFFICE.

WILLIAM KERSHAW, OF FALL RIVER, MASSACHUSETTS.

PlCKER-CHECK' FOR LOOMS.

SPECIFICATION forming part of Letters Patent No. 498,515, dated May 30,1893.

Application filed January 19, 1893. Serial No. 458,942. (No model.)

.To all whom it may concern:

Be it known that 1, WILLIAM KERSHAW, a citizen of the United States,residing at Fall River, in the county of Bristol and State ofMassachusetts, have invented certain new and useful Improvements inPicker-Checks for Looms; and I do hereby declare the following to be afull, clear, and exact description of the invention, such as will enableothers skilled in the art to which it appertains to make and use thesame.

This invention has for its object to provide a loom with an improvedpicker check by which the picker sticks are gradually arrested as theyare carried back by the momentum of the shuttle.

My invention consists of improved constructions and combinations ofparts illustrated in the accompanying drawings and disclosed in thefollowing description and claims.

Figure 1 is a front-elevation of a sufficient portion of a loom and layto enable any one to understand my invention. Fig. 2is an under sideview of the lay. Figs. 3 and at are detailed sections showing how thecheck straps of the twosides of the loom are secured to the frictionpulley. Fig. 5 is an enlarged view of a means for securing the strap aand its adjustment.

In the drawings A is the lay.

B B are the picker sticks. The retardation of the picker sticks at thetime specified is secured through the followinginstrumentalities:Beneath the bed of the lay I place a friction pulley 0 preferablyprovided on its periphery with three grooves each extending entirelyaround the pulley. A friction strap 0 is placed in the upper groove of.the pulley and its ends secured to the lay insuch way as to secure thenecessary friction. I have shown a means whereby this strap is securedso that the same can be adjusted to produce the friction desired. Theends of the strap 0 are secured to a rod or bolt 0' in any desired wayas by riveting and the said'rod or bolt passes through a bracket or lug0 secured to the under side of the lay. The rod or bolt 0 is providedwith screw threads and a nut 0 and by turning this nut the tension ofthe strap may be regulated to secure the desired friction upon thepulley. This conlower grooves of the pulley are the check straps cl d,which pass around the pulley in different directions the ends beingsecured to the pulley. By this arrangement as one strap is unwound theother is wound up on the pulley in its appropriate groove. To the outerend of each strap 01 d is secured a frame E which consists of the sidese e and the connections e e at the opposite ends of the frame. Theconnection 6 is a piece of stiff leather or of wood and leather and theends of the sides e e pass through the end piece (2 and are clinched orotherwise secured at that point. The sides 6 6 may be formed from asingle rod or bar by bending the same at the end 6 so as to afford ameans for the ready attachment of the strap (1 thereto, or the sides 6 6may be of separate pieces united at the end 6 as before described andalso united at their opposite ends so as to provide for the attachmentof the strap (1. This frame E is supported in guides e beneath the laywith its sides 6 e on opposite sides of the picker stick. The straps dmay have their outer ends supported by a guide e as shown struction isshown in detail in Fig. 5. In the in the drawings if desired. Such guidewill not always be necessary and may be dispensed with.

I prefer to arrange the parts beneath the lay as shown in Fig. 2, sothat the pulley 0 shall have one portion of its periphery tangential toa straight line from the center of one frame E to the center of theother, but this is not essential to the successful working of thedevice.

The operation of my improved picker check will be readily understood bythose skilled in the art. When the shuttle strikes the picker stick itwill be forced against the part e of the frame E and the frame movedoutwardly the strap 01 connected therewith turning the pulley C underthe friction of the strap 0 which friction gradually retards themovement of the picker stick and shuttle. The

What I claim, and desire to secure by Letpulley, and the frames inprolongation of ters Patent, is-

1. The combination withthe lay and picker sticks, of the frictionpulley, the straps re- 5 versely wound upon said pulley, the frames insaid straps and adapted to be directly engaged by the picker sticks,substantially as described.

In testimony whereof I affix my signature in prolongation of said strapsand adapted to be I presence of two Witnesses.

directly engaged by said picker sticks, substantially as described.

2. The combination with the lay and picker [0 sticks of the frictionpulley and its friction strap, the straps reversely wound upon saidWILLIAM KERSHAVV.

